smb2_set_rdma_key(9)

💅 smb2_set_rdma_key(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes we're reading kernel manpages now, we contain multitudes 🎀. this one's called smb2_set_rdma_key and it is, and i say this with love, extremely niche. but we're gonna get through it together, hand in hand 🫶

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✨ NAME ✨

smb2_set_rdma_key — validate descriptors and save invalidation state

like... that's the whole vibe. it checks your descriptors are valid, and it stashes the invalidation state. no cap 💅

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🌸 SYNOPSIS 🌸

int smb2_set_rdma_key (struct ksmbd_work *work , struct
smbdirect_buffer_descriptor_v1 *desc , __le32 Channel , __le16
channel_info_len );

it returns an int, it takes four things, and yes the formatting is chaotic but we love her for it 😭

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🦋 ARGUMENTS 🦋

• work — the request work item. the main character of this whole operation, honestly 👑
• desc — the first RDMA buffer descriptor. first one!! she's the opener, the rest follow her lead 💖
• Channel — the nested RDMA channel type. __le32, so keep that endianness in mind bestie, we don't play with that 🌈
• channel_info_len — the descriptor array length. it's a __le16, she's small but she matters ✨

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⭐ RETURN ⭐

0 on success — slay 🎉 — otherwise -EINVAL. yeah. if it's not vibing, it's -EINVAL. that's the whole menu 💀

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💜 SEE ALSO 💜

okay this is the long part and i need you to stay with me. the kernel file in question is ./fs/smb/server/smb2pdu.c, and it's giving extended universe — here's the whole cast fr fr:

• smb2_get_ksmbd_tcon(9)
• smb2_set_err_rsp(9)
• is_smb2_neg_cmd(9)
• is_smb2_rsp(9)
• get_smb2_cmd_val(9)
• set_smb2_rsp_status(9)
• init_smb2_neg_rsp(9)
• smb2_set_rsp_credits(9)
• init_chained_smb2_rsp(9)
• is_chained_smb2_message(9)
• init_smb2_rsp_hdr(9)
• smb2_allocate_rsp_buf(9)
• smb2_check_user_session(9)
• smb2_get_name(9)
• smb2_get_dos_mode(9)
• build_rdma_ctx(9)
• smb3_encryption_negotiated(9)
• decode_rdma_ctx(9)
• smb2_handle_negotiate(9)
• smb2_tree_connect(9)
• smb2_create_open_flags(9)
• smb2_tree_disconnect(9)
• smb2_session_logoff(9)
• create_smb2_pipe(9)
• smb2_set_ea(9)
• smb2_open(9)
• smb2_populate_readdir_entry(9)
• buffer_check_err(9)
• smb2_get_ea(9)
• smb2_query_info(9)
• smb2_close_pipe(9)
• smb2_close(9)
• smb2_echo(9)
• smb2_set_info_file(9)
• smb2_set_info(9)
• smb2_read_pipe(9)
• smb2_prep_rdma_read(9)
• smb2_current_req_len(9)
• check_rdma_desc(9)
• smb2_parse_rdma_write_transform(9)
• smb2_read_rdma(9)
• smb2_read(9)
• smb2_write_pipe(9)
• smb2_write_rdma(9)
• smb2_write(9)
• smb2_flush(9)
• smb2_cancel(9)
• smb2_lock(9)
• smb2_ioctl(9)
• smb20_oplock_break_ack(9)
• smb21_lease_break_ack(9)
• smb2_oplock_break(9)
• smb2_notify(9)
• smb2_is_sign_req(9)
• smb2_check_sign_req(9)
• smb2_get_sign_rsp_iov(9)
• smb2_set_sign_rsp(9)
• smb3_check_sign_req(9)
• smb3_set_sign_rsp(9)
• smb3_preauth_hash_rsp(9)

like i said. extended universe. sixty whole entries, i counted, my fingers hurt, but anything for you bestie 😭💖

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ngl if you actually read all sixty of those you have main character energy. go touch some grass, then come back and validate some descriptors 🧚

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and that's the page!! 🎀 huge shoutout to ./fs/smb/server for housing all this chaos, dated October 2026, and to smb2_set_rdma_key(9) herself for being iconic in a deeply unhinged kernel way. periodt. 💅✨🦋